Significance of the hyperfine interactions in the phase diagram of LiH xy1-xF4

M. Schechter, P. C.E. Stamp

Research output: Contribution to journalArticlepeer-review

50 Scopus citations


We consider the quantum magnet LiHoxY1-xF4 at x=0.167. Experimentally the spin glass to paramagnet transition in this system was studied as a function of the transverse magnetic field and temperature, showing peculiar features: for example, (i) the spin glass order is destroyed much faster by thermal fluctuations than by the transverse field; and (ii) the cusp in the nonlinear susceptibility signaling the glass state decreases in size at lower temperature. Here we show that the hyperfine interactions of the Ho atom must dominate in this system, and that along with the transverse inter-Ho dipolar interactions they dictate the structure of the phase diagram. The experimental observations are shown to be natural consequences of this.

Original languageEnglish
Article number267208
JournalPhysical Review Letters
Issue number26
StatePublished - 31 Dec 2005
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (all)


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